The previous fix reduced composer bottom padding from the full safe-area
inset to --oc-safe-area-bottom-visual (max 12px), which was not enough
to clear the home indicator on modern iPhones — the input bar disappeared
under the screen.
Restore the full safe-area padding for correct clearance. Reduce the
visual 'chin' by slimming the home indicator gradient overlay from 12px
to max 8px (25% of safe area) with a simpler opaque-to-transparent fade.
Remove the separate dark/light fallback gradients (the CSS var already
adapts to theme).
bot-hermes
0679aabaa1